i used to race Triathlon, and kept the bike. as much as i love my road bikes, I still cannot get away from my Quintana Roo for too long. I must say the fit is more crucial to me on my TT bike than my road bike. I ride a 58 road and a 54 TT bike. You can grab some great Tri bikes used, at decent prices. I also have my TT bike on the trainer right now as I like having the dedicated Aero bars to lean on and watch Netflix. My quintana roo has a very adjustable seat which allows me to change the seat tube angle a decent amount. I like being able to train using different muscles. If you have the means, buy a dedicated TT bike, you will not regret it.